VS 2008 : Create SQL Table From A String Array?
Oct 5, 2010
I have a string array that represents the field names for a table I need to create. Given that the first field type is date, the second is time, and the rest are floats, what is the easiest way to create the table? I am currently using the following code, but it seems there may be a simpler, less convoluted way
vb
'read the column names from the OPC server
Dim colNames() As String = GetFileColumnNames().Split(","c)
'build command string used to create the table
[code]....
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Dec 14, 2010
how do you convert a bidimensional array (of string)
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Jun 8, 2010
This should be an easy one, looks like I got myself too confused.I get a table from a database, data ranges from varchar to int to Null values. Cheap and dirty way of converting this into a tab-delimited file that I already have is this (shrunken to preserve space, ugliness is kept on par with original):
da.Fill(dt)
' da - DataAdapter '
' dt - DataTable '
[code].....
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Sep 18, 2009
I'm trying to create table in my database, that would have name like i type in Textbox and than i have to click the button With code like this :
sqlCmd.CommandText = "CREATE TABLE NAME = '" & TextBox1.Text & "' (First_Name char(50))"
I'm getting erorr : Incorect syntax near "name that i type"
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May 28, 2012
I have a string where I have created a template so to speak.
{
Dim myvariable as string
Richtextbox1.text = Richtextbox1.text & "The dog jumped over the" & myvariable & "to find the fox."
}
I have a list box that contains a list of options that loads into the variable example: fence, bucket, etc.
So the sentences would read like
The dog jumped over the fence to find the fox The dog jumped over the bucket to find the fox
Right now I have it coded to display into a rich text box but everything is in the same rich text box.
I'm trying to load the string into an array at the end of each loop this way I can then have each sentence separated.
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Jan 22, 2010
I am importing a string into my database using the following [code]...
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Nov 23, 2009
I have the following that creates an array of the alphabet (A-Z)[code]...
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Jan 18, 2011
I'm making a card game and the first thing I'm doing for it is generating a random card. I used an array for the cards (can't think of a better way to assign a picturebox to a card picture other then a huge select case block). I'm trying to split the 2D array into two parts but it doesn't work.
My current
vb
Public Class frmMain
Private Function Flop() 'First three common cards to be displayed.
[Code].....
I looked around online and I don't think a list will work for my 2-dimensional array.
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Mar 2, 2009
i have a string array that i want to output to a text file. the array size is 10000. i fill the array starting from 0 with some strings. at the end, i only want to show the array from index 256 to the last array that is not empty (for eg. if the array is filled with data from 0 to 2000, i only want the text file to show the data from 256 to 2000 and ignore the remaining strings). Is there any function to do this?t i use is shown below
Dim myArray(10000) as string
Dim strArray As New System.IO.StreamWriter("c:List.txt")
strArray.WriteLine("{0,10}{1,30}", "Index", "Symbol")
[code].....
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May 4, 2009
I would like to format output to a property of a custom control I have made.For instance I have a literal control in my control and when populated I want to check if it is longer than 30 characters long, if so, then go to the next space (as to not cut the word off) after the 30th character and place a <br /> tag in to place the next 30 characters on the next line.So if there were 100 characters in a string, there would be 3 line breaks in the label.I have the looping worked out to get the label populated but cannot get how to dymaically create the array based on the string lenth property and index of method.
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Oct 15, 2011
I am trying to export the contents of Array to Microsoft Access table. But as of now i could do it via creating a text file in the local HDD. I would like to find a solution bypassing this step.
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Jul 4, 2010
I want to fill an Array and list box from a table, with ALL of the records.
I DONT want to use Displaymember. Like shown below...
CODE:
This is the code so far, but it is only filling with the first record.
CODE:
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Sep 6, 2009
I need to fill an array with whole column from database table, so i have used reader to read the values from that column, but can not figure out how to put them into array (code below doesn't work) [Code]
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Mar 28, 2009
I am trying to do a home project and after many hours of failing to complete what seems to be a simple process I have decided to ask for some help. None of the examples I have found on over 20 websites is complete or works as the author suggests. (Im sure because of version differences)
I want to make a Visual Basic Program that, by means of clicking on a radio button and then clicking on a button named "create" will add a blank table to my db named by the string variable connected to a listbox where this name can be first entered before clicking on button1. Can someone help guide me in the right direction? The table needs to have three columns; Col1, Col2, Col3 -my database is named "Database.sdf"
Form/Interface info radiobutton1 'an option that if selected = true in the button1 click event will process the data that creates the table. textbox1 'table name input button1 to create table 'to run the process combobox1 'shows available tables that exist in the db button2 'click event shows the combobox (table) in the datagridview window button3 to delete 'to delete the selected table button4 to reset 'to clear radio button choice,textbox1, and combobox1 datagridview1 'to veiw the selected table Note: if also possible I would like a datagridview of the new table on the same form after it has been created.I am using Visual Basic 2008 Express, It is a microsoft SQL Server Compatct 3.5 Database
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Jun 12, 2009
I am working on my new project and I need to create a table for each user dynamically. In which the user will provide the Table name in the textbox and on pressing Create button a new table gets created in the same MS access database file with the provided name.[code]...
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Sep 24, 2010
I want to do a task with a function controlling database with vb scripting. My form will include textbox, button and datagridview to view the database table manually without add from the microsoft access or other..how i want to make the table appear when i put a number into the textbox that refer to the number of row and column and then click the button to create the database table? Besides, how to rename it using textbox?
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Sep 23, 2009
I have 3 controls sharing the same Bindingsource.Each control will require a different parameter for the query call to the DB to populate the proper controls data.However each control is filled with the same data and using one ctrl has the same effect to the thre controls. The controls all mirror eachother.how can i create a new instance of the table adapter?
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Jul 12, 2010
I want to create an access table at runtime. It happens that my table has to change, this means that i need to alter some or all of the fields. I need to be able to do this at runtime. I am using the following code, but it does not seem to work. The last field has to be an Autonumber field.
Private Sub CreateLessonPlan() '' Create table if it does not exsist
If con.State = ConnectionState.Closed Then
con.Open()
End If
Try
' Drop the Employees table if it already exists.
[Code] .....
Is it possible to alter the structure of a table that already has some records in it?
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Apr 20, 2009
I have a data table.
And I only want to have a single row in this table. I then write the changes to an xml file. The user will edit the row in this table save the values in the settings.properties. And then when ready write the changes to the config file.
However, I am thinking is there a better way. As I have to keep removing the row that was currently added. Then create a new one.
' Add the data to the datatable and write the changes to the config.xml file
Private Sub btnWriteConfig_Click(ByVal sender As Object, ByVal e As EventArgs)
' Only create a single row. All changes must be made to this row only.
[Code].....
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Jan 25, 2010
im using this code for create view joining tow table but its gived me error on 'INNER JOIN' :
Cmd.CommandText = "CREATE VIEW MyQry As SELECT TblData.Emp_ID,TblData.Emp_Name,TblData.Emp_Bonus,TblData.Emp_Salary,TblData.Emp_Sanction FROM TblData WHERE TblData.Emp_ID LIKE '" & LstEmp.Text & "' INNER JOIN
[Code].....
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Nov 29, 2009
I need want to create a array for the days of the week.
Dim DayOfWeek As Integer = Date.Today.DayOfWeek might give me 1 meaning monday, and i want it to looking in the array for the value 1 and find the one that matches.
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Apr 19, 2009
I am currently learning VB.net but for a project I need to create and array and pass it using a property. The data to be passed will be a train's destination, the time its due and the expected time of the train. I was wondering if someone could simplly explain how to first produce an array and then show how to pass it to a custom control
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May 18, 2011
I have a Datatable consisting of columns with Latitude and longitude I want to be able to pass through each of those values in each row into an array that can then be passed through a function which gets the distance between each row and a static. In short I am trying to get distance between one location and various others that reside in a datatable that will vary in size. Right now with this existing code I am getting 6 different locations into an array:
HTML
Public Function GetCoords() As Coord()
Dim myCoords() As Coord
myCoords(0).Lat1 = CDbl(list1_Lat.Text)
myCoords(0).Lon1 = CDbl(List1_Lon.Text)
[Code] .....
If I am on the right track I think I need to create a new array that will accept Lat and Lon from each row in my Datatable? My end goal is to be able to find properties within a certain distance of a property. In other words "return all properties that are within .25 miles of 12 Maple Street". I thought if I had Lat and Lon of a certain property there would be a formula that would give me the max and min Lat and Lon to be within a .25 mile radius. I have searched for how to get a radius, but didnt come up with anything I could comprehend. So instead I thought I would just get each properties (row) return the distance in a new column then loop through the table to return properties within the desired distance .25 miles etc...
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Apr 13, 2010
"Create an array to store 10 integers. Initialize all the array elements with -1."
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May 25, 2011
i read data from a textfile into a one dimensional array (string()) and refer to that later on to build a new list with just the lines i want. using chartData as New List (of String) I can load the List collection just fine. Now, I want to send the output to a table so I can bind it to a datagrid. using Split and AddRange breaks the one dimensional data up into new rows but I want this sort of thing:
"Row0 Cell0"->"Row0 Cell1 "->"Row0 Cell3";<line break>
"Row1 Cell0""Row1 Cell1"Row1 Cell3;<line break>
Note I provided for characters that can be used in a split function (-> and vbTab), which works, but the split in the List gives me a one dimensional array.
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Jan 14, 2010
So I have this
Dim a as string = "Hello"
Dim b as string()
now I want b(0) to have "H", b(1) "e", b(2) "l", and so on.
btw a changes everytime, so don't just say do b(0) = "H"
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May 16, 2010
I have an array set up as follow Dim MyOptions() As String. i want to loop through a xml file adding each value to this array, how can I add to the array on each loop?
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Nov 20, 2009
converting a 2 array into a string At the moment I have a 2 array and a string
The 2d array goes as follows:
0 1 2 3 4 5
0 1 2 3 4 5
0 1 2 3 4 5
[Code]....
I have tried to use the string to char method but its not working
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Feb 19, 2010
[code]There are 5 matches every time. I have another function that needs to use each match but as a string, not an array. I usually just use the .ToString but it is not working.
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Feb 18, 2009
How would I check if a value is in a string array? Like say there is pages(10) and pages(5) is "rhijaen" I want it to do something like:
If "rhijaen" isin pages() then
dothis
end if
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